Missing Files

Hey
I have trying to move a archive from on site to another and faced the same error trace, when move the same archive

17-04-2013 15:52:34 Step 1 of 5 - Copying.
17-04-2013 17:34:17 An error was encountered while processing an item. Enterprise Vault will try again later unless the retry count has been reached. Item: 70095061DF9FB2B8587A107CB3A4EC41. Exception: Object reference not set to an instance of an object..
17-04-2013 18:03:15 Progress Statistics: Total items: 281403. Items processed: 63739. Errors: 0.
17-04-2013 18:03:15 An error was encountered while processing an item. Enterprise Vault will try again later unless the retry count has been reached. Item: 70095061DF9FB2B8587A107CB3A4EC41. Exception: Object reference not set to an instance of an object..
17-04-2013 18:03:15 Move Archive task has failed with fatal error.
17-04-2013 18:03:15 Stopped Processing

I have then run the evsvr tool for Verify all Archive Objects. And here can I see that SISPartId 70DEE11A2366C63650E961D3371B2CA1~AB~90CD807E~00~1 related to the item that has been failing in the move processes not is found on the disk.